20439+3119
- Unique Name: 20439+3119ES 366
- RA: 20 43 53.36
- Dec: +31 19 10.4
- Discoverer: ES
- Discoverer Number: 366
- Components:
- First year: 1906
- Last year: 2000
- Observations: 6
- First position angle: 123
- Last position angle: 127
- First separation: 3.3
- Last separation: 4.0
- Mag first component: 10.1
- Mag second component: 13.27
- Spectral type: K8
- Primary proper motion RA: 12
- Primary proper motion DEC: -3
- Secondary proper motion RA: 12
- Secondary proper motion DEC: -5
- Durchmusterung: +30 4155
- Notes: N
